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Experimental method of oil-containing sludge heat treatment

An experimental method and sludge technology, applied in the directions of sludge treatment, water/sludge/sewage treatment, dehydration/drying/thickened sludge treatment, etc. Obtain issues such as the production volume and composition data of oily sludge heat treatment products to achieve harmless and resource utilization and reduce pollution

Active Publication Date: 2013-01-02
PETROCHINA CO LTD +1
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Problems solved by technology

This method still only considers the temperature range that can be pyrolyzed and the final result of product recovery, but cannot obtain the production and composition data of the heat treatment products of oily sludge at different heating temperature ranges, and cannot study and master the heat treatment of oily sludge. Process Features and Effects

Method used

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  • Experimental method of oil-containing sludge heat treatment
  • Experimental method of oil-containing sludge heat treatment

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Experimental program
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Embodiment 1

[0021] The microwave heating reactor of the present invention has a volume of 3000ml, is configured with a microwave power of 10KW, and uses a computer program to control the heating temperature and heating rate. The experimental sample is dewatered sludge from oily sewage treatment, with a water content of 79.32% (mass ratio) and an oil content of 13.53% (mass ratio). The specific experimental steps and experimental results are as follows: see figure 1 and figure 2 .

[0022] The first step is to sample. Weigh 1000 g of the experimental sample with a sample box, put it into a microwave heating reactor, and then seal the reactor.

[0023] The second step is drying. Under the condition that the reactor is strictly sealed, start the heating system, control the temperature rise rate to 60°C / min, raise the temperature in the reactor from room temperature to 250°C, and keep the temperature constant until no more fraction escapes. The results of condensing, separating and meas...

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Abstract

An experimental method of oil-containing sludge heat treatment is applicable to research of oil-containing sludge heat treatment effect and characteristics. The programmed heating process comprises the following steps of: firstly, desiccation treatment, wherein an oil-containing sludge sample is heated from room temperature to 200-250 DEG C to realize complete moisture evaporation, and the composition of non-condensable gas and recovered oil is analyzed; secondly, pyrolysis treatment, wherein the desiccated oil sludge is heated to 600-700 DEG C to realize complete pyrolysis of organic substances such as heavy oil, asphaltene and the like in the oil sludge by high-temperature heating, and the composition of recovered oil and non-condensable gas is analyzed; thirdly, calcination treatment, wherein the oil-containing sludge pyrolytic residues are heated to 800-900 DEG C, and the content of pollutants such as petroleum and the like is analyzed. The method is convenient and rapid for the obtaining of the yield and composition data of heat treatment products of the oil-containing sludge at different heating temperature phases, and for the research and mastering of the heat treatment effect and characteristics of oil-containing sludge, and can realize the purpose of harmless and resource utilization of oil-containing sludge.

Description

technical field [0001] The invention relates to the field of environmental protection of petroleum and petrochemical industries, and relates to an experimental method for heat treatment of oily sludge. This method is suitable for experimental evaluation and technical research on the reduction, recycling and harmless treatment of oily sludge and other wastes produced in oilfield refinery production and sewage treatment systems. Background technique [0002] Oily sludge is a solid waste produced in the process of petroleum exploration and refining. It contains not only petroleum substances, but also toxic and harmful substances such as benzene and phenols. It has been included in the "National Hazardous Waste List" for management. With the increasing scale of oil exploitation and oil refining, more and more oily sludge is produced, and the harm and pollution to the environment are becoming more and more serious. Therefore, it is of great significance to carry out research on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/12C02F11/10
CPCY02W10/40
Inventor 王万福雍兴跃邓皓屈一新刘鹏王际东刘光全李果
Owner PETROCHINA CO LTD
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